/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is MPEG4IP.
 *
 * The Initial Developer of the Original Code is Cisco Systems Inc.
 * Portions created by Cisco Systems Inc. are
 * Copyright (C) Cisco Systems Inc. 2001.  All Rights Reserved.
 *
 * Contributor(s):
 *      Dave Mackie     dmackie@cisco.com
 */

#include "src/impl.h"

namespace mp4v2
{
    namespace impl
    {

        ///////////////////////////////////////////////////////////////////////////////

        MP4TrunAtom::MP4TrunAtom(MP4File &file)
            : MP4Atom(file, "trun")
        {
            AddVersionAndFlags();   /* 0, 1 */
            AddProperty( /* 2 */
                new MP4Integer32Property(*this, "sampleCount"));
        }

        void MP4TrunAtom::AddProperties(uint32_t flags)
        {
            if (flags & 0x01)
            {
                // Note this is a signed 32 value
                AddProperty(
                    new MP4Integer32Property(*this, "dataOffset"));
            }
            if (flags & 0x04)
            {
                AddProperty(
                    new MP4Integer32Property(*this, "firstSampleFlags"));
            }

            MP4TableProperty *pTable =
                new MP4TableProperty(*this, "samples",
                                     (MP4Integer32Property *)m_pProperties[2]);
            AddProperty(pTable);

            if (flags & 0x100)
            {
                pTable->AddProperty(
                    new MP4Integer32Property(*this, "sampleDuration"));
            }
            if (flags & 0x200)
            {
                pTable->AddProperty(
                    new MP4Integer32Property(*this, "sampleSize"));
            }
            if (flags & 0x400)
            {
                pTable->AddProperty(
                    new MP4Integer32Property(*this, "sampleFlags"));
            }
            if (flags & 0x800)
            {
                pTable->AddProperty(
                    new MP4Integer32Property(*this, "sampleCompositionTimeOffset"));
            }
        }

        void MP4TrunAtom::Read()
        {
            /* read atom version, flags, and sampleCount */
            ReadProperties(0, 3);

            /* need to create the properties based on the atom flags */
            AddProperties(GetFlags());

            /* now we can read the remaining properties */
            ReadProperties(3);

            Skip(); // to end of atom
        }

        ///////////////////////////////////////////////////////////////////////////////

    }
} // namespace mp4v2::impl
